Larch House Old Knebworth Lane Knebworth Hertfordshire SG3 6FS

This site has had 4 applications since 2026: 3 approved, 0 refused.

• 26/02332/TCA Granted

  Larch House Old Knebworth Lane Knebworth Hertfordshire SG3 6FS

  R1: Robinia - Remove.

  Decided 16 Oct 2026 Trees
• 26/02210/NMA Decided

  Larch House Old Knebworth Lane Knebworth Hertfordshire SG3 6FS

  External wall insulation and timber boarding added to east wall. Front door design updated, bi-fold doors changed to 6 doors and addiotnal rooflight added to landing outside bedroom 6 (as Non-Material Amendment to Planning Permission 26/00817/FPH granted 03.06.2026)

  Decided 29 Sep 2026 Amendments
• 26/00817/FPH Granted

  Larch House Old Knebworth Lane Knebworth Hertfordshire SG3 6FS

  Insertion of front bay window following removal of existing garage doors to facilitate garage conversion into habitable accommodation. Front entrance porch and installation of side canopy. Insertion of rooflights to existing rear element roofslope. Alterations to fenestration. Erection of boundary wall/railings and installation of entrance gates.

  Decided 3 Jun 2026 Householder

1. 2 Mar 2026

   Received by North Hertfordshire

2. 28 Apr 2026

   Decision issued: Conditional Permission

3. 9 Aug 2026

   Added to PlanIndex

North Hertfordshire granted permission on 28 April 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.

• Larch House Old Knebworth Lane Knebworth Hertfordshire SG3 6FS

  26/00817/FPH Submitted 27 Mar 2026 50 yards away

  Insertion of front bay window following removal of existing garage doors to facilitate garage conversion into habitable accommodation. Front entrance porch and installation of side canopy. Insertion of rooflights to existing rear element roofslope. Alterations to fenestration. Erection of boundary wall/railings and installation of entrance gates.

  Granted Householder Extension Loft or dormer +1 12 docs
  Small domestic

• Larch House Old Knebworth Lane Knebworth Hertfordshire SG3 6FS

  26/02332/TCA Submitted 16 Sep 2026 50 yards away

  R1: Robinia - Remove.

  Granted Trees

• Larch House Old Knebworth Lane Knebworth Hertfordshire SG3 6FS

  26/02210/NMA Submitted 2 Sep 2026 50 yards away

  External wall insulation and timber boarding added to east wall. Front door design updated, bi-fold doors changed to 6 doors and addiotnal rooflight added to landing outside bedroom 6 (as Non-Material Amendment to Planning Permission 26/00817/FPH granted 03.06.2026)

  Decided Amendments Loft or dormer Windows or glazing

• Crom Cottage Park Lane Old Knebworth Knebworth Hertfordshire SG3 6QA

  23/00789/LBC Submitted 31 Mar 2023 150 yards away

  Internal alterations together with replacement window frame (Item 9) and window lintels (Item 21) like-for-like.

  Granted Heritage and listed buildings Windows or glazing 11 docs

• 190 Park Lane Old Knebworth Knebworth Hertfordshire SG3 6PS

  22/01738/FPH Submitted 17 Aug 2022 200 yards away

  Single storey rear extension to facilitate 1-bed annexe accommodation following demolition of existing outbuilding

  Refused Householder Extension Demolition 10 docs
  Small domestic

• 190 Park Lane Old Knebworth Knebworth Hertfordshire SG3 6PS

  22/02172/LBC Submitted 17 Aug 2022 200 yards away

  Single storey rear extension to facilitate 1-bed annexe accommodation following demolition of existing outbuilding

  Refused Heritage and listed buildings Extension Demolition 11 docs
  Small domestic

• 26/01998/FPH Awaiting decision

  69 Bearton Green Hitchin Hertfordshire SG5 1UG

  Single storey side and rear extension. Alterations to existing roof to include hip to gable roof extension and insertion of rear dormer window and front rooflights to facilitate loft conversion into habitable accommodation. Alterations to fenestration

  Received 25 Aug, published by the council 26 Aug 2026 Householder
• 26/00371/FPH Granted

  12 Dale Close Hitchin Hertfordshire SG4 9AS

  Replacement raised hipped roof and insertion of front rooflight and two rear dormers to facilitate loft conversion into habitable accommodation. Two storey and part single storey side and rear extensions and front porch following demolition of existing side and rear extensions. Alterations to fenestration to include insertion of first floor side window. External cladding and Installation of rear raised patio and steps.

  Received 10 Feb, published by the council 24 Jul 2026 Householder
• 26/01940/FPH Awaiting decision

  Old Hammers Mill End Rushden Buntingford Hertfordshire SG9 0TA

  Two storey rear extension

  Received 20 Aug, published by the council 25 Aug 2026 Householder
• 26/00904/FPH Granted

  4 Leete Place Royston Hertfordshire SG8 5DX

  Single storey side and rear extension, open-sided front porch, replacement roof including installation of rooflights, removal of chimney and alterations to existing fenestration following demolition of existing store. Installation of vehicular access via dropped kerb and vehicle crossover including hardstanding to provide No.2 parking spaces.

  Received 22 Apr, published by the council 24 Jul 2026 Householder
• 26/01380/FPH Granted

  15 Ninesprings Way Hitchin Hertfordshire SG4 9NQ

  Part two storey and part single storey side extension and single storey rear extension following demolition of existing side element and rear conservatory. Front porch, alterations to fenestration and hard and soft landscaping works. External cladding and rendering.

  Received 5 Jun, published by the council 24 Jul 2026 Householder